1. Midterm Exam Study Guide Answers

2. 6-4.1
Gas Composition:
Nitrogen 78%
Oxygen 21%
Other (Trace) 1%

3. 6-4.1
Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere
Trains start moving through exits.

4. 6-4.1
Troposphere

5. 6-4.2
Condensation
Surface water-flow and groundwater flow
Evaporation and Transpiration
Precipitation

6. 6-4.3
Round and puffy with a flat bottom.

7. 6-4.3
Stratus

8. 6-4.3
White = Fair weather
Dark = Rain

9. 6-4.3
Heavy rain and thunderstorms.

10. 6-4.4
A front that stays in one place a long time.

11. 6-4.4
When two cold air masses are pushing in on each side of a warm air mass.

12. 6-4.4
When a cold air mass pushes against and under a warm air mass.

13. 6-4.4
When a warm air mass pushes against and under a cold air mass.

14. 6-4.5
A Sling Psychrometer

15. 6-4.5
A Barometer in MB’s

16. 6-4.5
Anemometer

17. 6-4.6
Lines on a weather map that show high and low pressure systems.

18. 6-4.6
Satellite

19. 6-4.6
Cloudy
Barometric Pressure = 1010mb
Wind Speed = 9-14 mph
Wind from east

20. 6-4.7
The main source of energy. It comes from the sun, giving us heat and light.

21. 6-4.7
The Greenhouse Effect

22. 6-4.8
Convection currents in the atmosphere cause Global Winds to develop.

23. 6-4.8
Climate zones occur because of uneven heating of the earth.

24. 6-4.9
Trade winds blow east to west in tropical region.

25. 6-4.9
Westerly winds blow west to east in temperate region.

26. 6-4.9
Jet Stream

27. 6-5.1 Sources of electrical energy include:
stored chemical energy in batteries;
solar energy in solar cells;
fuels or hydroelectric energy in generators.

28. 6-5.1 Potential energy – A stretched rubber band. Water behind a dam.
Ex(s):
A stretched rubber band.
Water behind a dam.

29. 6-5.1
Kinetic energy
energy an object has due to its motion. Mechanical kinetic energy increases as an object moves faster.
(Ex):
A moving car.

30. 6-5.2
Energy can never be created or destroyed. It can only be transformed from one form into another.

31. 6-5.3
Electromagnets

32. 6-5.3
With Generators
That produce electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

33. 6-5.3
Unlike poles = attract.
Like poles = repel

34. 6-5.4
Electrical energy can be transformed to light, sound, heat, and mechanical motion in an electric circuit

35. 6-5.4 *a source of electrical energy,
*a conductor of the electrical energy (wire) connected to the energy source,
*a device that uses and transforms the electrical energy.

36. 6-5.5
Convection

37. 6-5.5
Conduction

38. 6-5.5
Radiation

39. 6-5.6
Energy

40. 6-5.6 Work means to: apply a force to an object over a distance, and
the object moves in response to the force.

41. 6-5.6
Evidence of energy is when work is being done.

42.
Device that helps reduce the amount of force required to do work.

43.
Pulley – a grooved wheel with rope running along groove.
Lever – rigid bar or board that is free to move around a fixed point called a fulcrum.

44.
Inclined Plane – sloping surface that reduces amount of force required to lift object.